Name a card that's not in your deck
Because Mega Evolutions in Pokmon Legends: Z-A will be a core aspect of its gameplay, as confirmed by Nintendo, it makes sense for the TCG to follow suit, especially because its a returning mechanic
People also note that the quality control seems to be better for Japanese cards, so there are fewer mess-ups falling through the cracks, too
The only issue, assuming you don't consider costing ten mana an issue, is that resolving four cascades in a row can get complicated, especially when individual cascades hit other cascade spells mid-resolution
Belakor, the Dark Master Be'lakor, the Dark Master draws unseemly sums of cards with its enters ability, which can be further exploited via cards like Displacer Kitten and Thassa, Deep-Dwelling retriggering it
Pokemon Cards Have Never Been More Expensive, And Pokemon TCG Pocket Is Partly To Blame Pocket has led to a spike in the real TCG's popularity, but there's more to the shortages than real fans wanting to buy cards